Coupling device.



No. 803,840. PATENTED NOV. '7, 1905.

D. MILLER.

COUPLING DEVICE.

APPLICATION FILED SEPT, 14, 1903.

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4/ AMZZJW David Miller.

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UNITED STATES PATENT OFFICE.

DAVID MILLER, OF SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRICCOMPANY, A CORPORATION OF NEW YORK.

COUPLING DEVICE.

Specification of Letters Patent.

Patented Nov. '7, 1905.

Application filed September 14, 1903. Serial No. 173,048.

To all whom, it may concern:

Be it known that I, DAVID MILLER, a citizen of the United States,residing at Schenectady, in the county of Schenectady, State of NewYork, have invented certain new and useful Improvements in CouplingDevices, of which the following is a specification.

This invention relatesto means for quickly coupling and uncoupling twoseparable elements. It has been designed especially to couple thevibrator of a pattern-vibrating machine with the pattern, whereby thelatter is loosened and removed from the mold; but it is capable of manyother uses, and henceIdo not limit myself to such an application of it.

.The invention consists in the combination, with a bifurcated member, ofa second member having a transverse rotatable pin adapted to enterbetween the jaws of the first member and so constructed that it can belocked therein by a partial rotation.

In the accompanying drawings, Figure 1 is a side elevation of myimproved coupling. Fig. 2 is a sectional elevation of the pin-carryingmember. Fig. 3 is a longitudinal section. Fig. 4. is a side elevation ofthe bifurcated member, and Fig. 5 is a side elevation of thepin-carrying member.

The coupling is composed of two separable members, one of which has abody 1, provided with two parallel jaws 2, formed by a transverselongitudinal slot 3 terminating in a cylindrical enlarged end 1. Thebody is provided with means for attaching it to any desired object, suchmeans being preferably a screw-threaded shank 5. The second member ofthe coupling has a body 6, provided with a socket 7, adapted to fitsnugly over the slotted member 1. Aslotted shank 8 affords provision forattaching this member to any desired object. Spanning the socket 7 is acylindrical pin 9, rotatable in hearings in the walls of said socket andprojecting beyond them at each end. That portion of the pin inside thesocket 7 is flattened on opposite sides, the width between the flattenedfaces being slightly less than that of the slot 3. The diameter betweenthe cylindrical faces of the pin is substantially the same as that ofthe enlargement at. On one end of the pin is a handle 10, and abuttingbetween the handle and the socket 7 is a helical spring 11. The

other end of the pin has a laterally-projecting lug 12, which is pulledagainst the adjacent wall of the socket by the spring and is adapted toenter two notches 13 1 1, one lengthwise of the body 6 and the other atright angles thereto.

The operation of the device is as follows: To unite the two members ofthe coupling, the pin is turned so that its flattened portion can passbetween the jaws 2 when the latter are slipped into the socket 7. Whenthe pin reaches the enlargement 4:, it can be given a quarter-rotationby the handle, which will lock it in place, as shown in Fig. 3, andfasten the two members together. In this position of the pin the lug 12will be snapped into the notch l t-by the spring, so as to preventaccidental turning of the pin and consequent uncoupling of the members.'I/Vhen it is desired to separate them, the pin can be pushed lengthwiseuntil the lug is disengaged from the notch and can then be rotated aquarter-turn to bring the pin into position to slip out through the slot3, in which position it is held by the lug entering the notch 13.

In accordance with the patent statutesI have described the principle ofoperation of my invention, together with the apparatus which I nowconsider to represent the best embodiment thereof; but I desire to haveit understood that the apparatus shown is only illustrative and that theinvention can be carried out by other means.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is"

l. A coupling comprising two members, one having a longitudinalslotprovided with an enlarged cylindrical end, and the other having asocket to fit over the slotted member, and a rotatable cylindrical pintransverse 'to said socket, flattened to pass through said slot, androtatable in said enlarged end.

2. Acoupling comprising two members, one having a longitudinal slotprovided with an enlarged end, a transverse pin carried by the othermember and flattened to pass through said slot, and rotatable to engagewith said enlarged end, interlocking portions on the pin and the memberwhich carries it, and a spring for causing said portions to interlock.

3. Acouplingcomprisingtwomembers, one having a longitudinal slotprovided with an enlarged end, a transverse pin carried by the othermember and flattened to pass through said slot, and rotatable to engageWith. said enlarged end, a lug 0n the pin, a notch in the member whichcarries it, and a spring urging said lug into said notch When the pinhas been engaged With the slotted member.

In Witness whereof I have hereunto set my hand this 12th day ofSeptember, 1903.

DAVID MILLER.

Witnesses:

BENJAMIN B. HULL, HELEN ORFORD.

